Results 31 to 40 of about 2,054,858 (263)
Spinning black hole binary dynamics, scattering amplitudes, and effective field theory [PDF]
Physical Review D, 2020 We describe a systematic framework for finding the conservative potential of compact binary systems with spin based on scattering amplitudes of particles of arbitrary spin and effective field theory.
Z. Bern +4 more
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Physical representations for scattering amplitudes and the wavefunction of the universe [PDF]
SciPost Physics, 2021 The way we organise perturbation theory is of fundamental importance both for computing the observables of relevance and for extracting fundamental physics out of them.
P. Benincasa, W. J. T. Bobadilla
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Leading nonlinear tidal effects and scattering amplitudes [PDF]
Journal of High Energy Physics, 2020 We present the two-body Hamiltonian and associated eikonal phase, to leading post-Minkowskian order, for infinitely many tidal deformations described by operators with arbitrary powers of the curvature tensor.
Z. Bern +4 more
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Scattering amplitudes and electromagnetic horizons
Journal of High Energy Physics, 2023 We consider the scattering of charged particles on particular electromagnetic fields which have properties analogous to gravitational horizons. Classically, particles become causally excluded from regions of spacetime beyond a null surface which we ...
Anton Ilderton, William Lindved
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Positive moments for scattering amplitudes [PDF]
Physical Review D, 2020 We find the complete set of conditions satisfied by the forward $2\to2$ scattering amplitude in unitarity and causal theories. These are based on an infinite set of energy dependent quantities -- the arcs -- which are dispersively expressed as moments of
B. Bellazzini +4 more
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Likelihood equations and scattering amplitudes [PDF]
Algebraic Statistics, 2020 We relate scattering amplitudes in particle physics to maximum likelihood estimation for discrete models in algebraic statistics. The scattering potential plays the role of the log-likelihood function, and its critical points are solutions to rational ...
B. Sturmfels, Simon Telen
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MHV gluon scattering amplitudes from celestial current algebras [PDF]
Journal of High Energy Physics, 2020 We show that the Mellin transform of an n-point tree level MHV gluon scattering amplitude, also known as the celestial amplitude in pure Yang-Mills theory, satisfies a system of (n−2) linear first order partial differential equations corresponding to (n ...
Shamik Banerjee, Sudip Ghosh
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Δ-algebra and scattering amplitudes
Journal of High Energy Physics, 2019 In this paper we study an algebra that naturally combines two familiar operations in scattering amplitudes: computations of volumes of polytopes using triangulations and constructions of canonical forms from products of smaller ones.
Freddy Cachazo +3 more
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Three-loop helicity amplitudes for four-quark scattering in massless QCD
Journal of High Energy Physics, 2021 We compute the three-loop corrections to the helicity amplitudes for q q ¯ $$ \overline{q} $$ → Q Q ¯ $$ \overline{Q} $$ scattering in massless QCD. In the Lorentz decomposition of the scattering amplitude we avoid evanescent Lorentz structures and map ...
Fabrizio Caola +4 more
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Tropical fans, scattering equations and amplitudes
Journal of High Energy Physics, 2021 We describe a family of tropical fans related to Grassmannian cluster algebras. These fans are related to the kinematic space of massless scattering processes in a number of ways.
James Drummond +3 more
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